Is it possible to concatenate a string with series of number?

Question

I have a string (eg. 'STA') and I want to make a cell array that will be a concatenation of my sting with a numbers from 1 to X.

I want the code to do something like the fore loop here below:

for i = 1:Num
    a = [{a}  {strcat('STA',num2str(i))}]
end

I want the end results to be in the form of {<1xNum cell>}

a = 'STA1' 'STA2' 'STA3' ...

(I want to set this to a uitable in the ColumnFormat array)

ColumnFormat = {{a},...                 % 1
             'numeric',...              % 2
             'numeric'};                % 3

score 3 · Answer 1 · answered Mar 08 '13 at 21:01

3

I'm not sure about starting with STA1, but this should get you a list that starts with STA (from which I guess you could remove the first entry).

N = 5;
[X{1:N+1}] = deal('STA');
a = genvarname(X);
a = a(2:end);

answered Mar 08 '13 at 21:01

Kim

151
2

Interesting approach. If you need numbers in a sequence starting from 1. `X=repmat({'STA'},1,N+1);` should also work. – yuk Mar 08 '13 at 21:54

score 1 · Answer 2 · answered Mar 08 '13 at 17:47

1

Try this:

N = 10;
a = cell(1,N);
for i = 1:N
    a(i) = {['STA',num2str(i)]};
end

answered Mar 08 '13 at 17:47

Alfredo Capobianchi

115
2
12

Is it possible to have it without a FOR loop? – NimrodB Mar 08 '13 at 18:36

yuk · Accepted Answer · 2013-03-08T21:58:01.543

You can do it with combination of NUM2STR (converts numbers to strings), CELLSTR (converts strings to cell array), STRTRIM (removes extra spaces)and STRCAT (combines with another string) functions.

You need (:) to make sure the numeric vector is column.

x = 1:Num;
a = strcat( 'STA', strtrim( cellstr( num2str(x(:)) ) ) );

As an alternative for matrix with more dimensions I have this helper function:

function c = num2cellstr(xx, varargin)
%Converts matrix of numeric data to cell array of strings

c = cellfun(@(x) num2str(x,varargin{:}), num2cell(xx), 'UniformOutput', false);

Is it possible to concatenate a string with series of number?

3 Answers3